#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

void swap_usr(int&,int&);
int main(void)
{
    int a, b;
    cin >> a >> b;
    swap_usr(a,b);
    cout << "a = " << a << " b = " << b << endl;
    return 0;
}

void swap_usr(int &a, int &b)
{
    int temp;
    temp = a;
    a = b;
    b = temp;
}